Improved supplemental jaw joe wrenches



ROBERT FARIE'S, or' INDIANAPOL'IS, INDIANA,

Letters Patent No. l79,219., dated June 23, 1868,

'IMPROVBD SUPPLEMENTAL .mwpron warrants.y 1

titi rlgtmle referat tu in ttm etters @niet finit mating @tutti its time T0 ALL WHOM IT MAY CON CERN g Be it known that'I, ROBERT FARIES. of Indianapolis, in the county of Marion, and State of Indiana, have invented a ucwand improved Appliable Wrench-Jaw; and I do hereby declare that the following is a full, clear, and exact description thereoilrwhich will enable others skilled in the art to make and usethe same, reference beinghad to the accompanying drawings, forming'part of this specification.

This invention relates to a wrench-jaw of wedge-form, to be used with the commonscrew or other wrenches', for pipes, round bolts, die., which, when applied to the work, (pipe, &c.,) and the wrench vpulled in the proper direction,tightens on the wok, and becomes tighter the more forco is applied.

Thepresent invention consists, principally, in curving 'said appliable jaw in its length, and providing a loop in the end of-the same, the object of -which will be hereafter stated, with yother advantages.-

In the drawings- Figure 1 is a common screwwrench, A, and pipe, B, and appliable jaw, C, as applied when in use,

Figure 2 is the face or side of the appliable jaw, which `comes in contact with the work when in iuse.

Similar letters of reference denote like parts. l y

In 'g. 1, the appliable jaw C will be seen to be taper or wedge-shape in its length, and curved in the saine direction, having a bearing on the jaw of the wrench a on only a small part of its length, which is directly opposite to'the point of contact with the pipe B, and in line with the .force applied. It will be also seen that the face of the jaw @has teeth, b, out across it,'which teeth, coming in contact with work, out into it and prevents slipping.

A hole is drilled through the corner of thejaw C at c, which forms a loop intowhich the chain dis hooked, the other end of which is hooked into asimilar loop in the jaw a at e, which is for. the purpose of keeping jaw C from dropping when detached from thel work. But as it is the `oliject for this improved jaw to be suitable, for any common-wrench, as now used, without any work necessary to be done't it, I will 'state that it is not, absolutely necessary that the loop e be made, it would only be more convenient ii' it were there, which, however, .v almost any mechanic could do for himself.

In case the operator were working on a scai'olding, or in a well, or any placewhere there wouldbe danger of losing it if dropped, it might be secured to the wrench, or to the operator's wrist, with a bit of string or wire, and answeri the samepurpose, if not so well. p

This improved jaw may be made of either cast steel or cast iron chilled. -The medium size of these jaws. will be about asV follows, to wit,'scven-eighths of one inch wide, by -one and one-quarter of oneiinch long, and 1 about one-eighth of one inch thicken the thin end, and thick enough on the other: end to give a taper of about one-quarter of one inch to one inch in length'. l

Now I am dware thatwedge-shaped attachments to the common wrench have been made and used for the saine purpose of the jaw I claim, but none of them are nea-r so good. -Some of the` advantages of the within-Y described jaw I will state as follows, to wit: First, it being curved, as described, it presents a smaller surface, and is in better shape to pass over any unevenness on jaw .a of the wreuch,'which`being the case,-it moves casier' and gripes the work tighter than it`-it werestraight, and is not soliahlc t0 roll the work out and strain the wrench; second, it having no projections that tit into or over any part of the wrench, amedium size is suitablefor various-sized wrenches, without anything being done to the wrench; third, it is small and neat, and may be carried attached to thekey-,ring or fob-chain of the mechanic, and be always at hand when wanted for use, the chain being attached to it partly for that purpose; fourth, it canvbe made and'sold much cheaper than others.

Now I do not wish to claim the withindescribed wrench-jaw, in combination with the wrench, that beingl represented inthe drawings, for the better illustration of the invention. Suitable wrenches already exist, and are manufactured by others; consequently, under existing circumstances, the within-described appliahle wrench- 'jaw is a useful article ofitself; therefore,

What I claim as new, and. desire to secure by Letters Patent, is-

The appliable wrench-jaw, when made substantially 'as described, as an article of manufacture.

ROBERT FARIES.'

Witnesses: t

BENJ.l F. HETEERINGTON, Y* JOSEP-n KINDEL. 

